Oil exploitation method based on nano motor and application of nano motor

Abstract

The invention relates to the technical field of petroleum exploitation, in particular to an oil exploitation method based on a nano motor and application of the nano motor. The oil exploitation methodbased on the nano motor comprises the steps that step 1, the nano motor is taken, and the nano motor is mixed with deionized water to prepare nano motor suspension; step 2, a hydrogen peroxide solution is taken and mixed with the nano motor suspension and then injected into the stratum of an oil well; step 3, a catalytic metal layer evaporated on the surface of the nano motor catalyzes hydrogen peroxide to be decomposed to generate an oxygen concentration gradient to enable the nano motor to move; step 4, when the nano motor moves in the stratum, hydrophobic oleophilic groups modified on thesurface of the nano motor are combined with oil drops, and the nano motor with the oil drops moves in stratum liquid; and step 5, the nano motor with the oil drops is extracted from the oil well, andthen centrifugal separation is carried out to separate the oil drops from the nano motor and the oil drops are extracted. The oil exploitation method can effectively improve the recovery ratio of an oil field.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to a nanomotor-based petroleum exploitation method and the application of the nanomotor. Background technique [0002] Most of my country's oil resources are distributed in continental oil fields, and the permeability of oil and gas wells in oil fields is low, making oil exploitation relatively difficult. Oil and gas reservoirs are widely distributed geographically, and the distribution of the above oil and gas reservoirs has resulted in the difficulty and high cost of oil extraction in my country. Traditional oilfield development can be divided into three stages: primary oil recovery, secondary oil recovery and tertiary oil recovery according to the law of technological progress. During primary oil recovery, oil is usually produced spontaneously under formation pressure, or pumped out using conventional pumps. When the formation pressure is insufficient, the format...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a nanomotor-based oil extraction method and the application of nanomotors, which can solve the problem that oil trapped in blind ends, pores or cracks of rock formations is difficult to extract; the oil extraction method of the present invention can effectively improve oil recovery factor

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